Fernandinite

General Information:
 Chemical Formula:
CaV8O20·4(H2O)
 Composition:
(Molecular Weight = 839.66 gm)
Calcium 4.77 % Ca
Vanadium 48.54 % V 
Hydrogen 0.96 % H 
Oxygen 45.73 % O 
 Empirical Formula:
CaV5+8O20·4(H2O)
 Locality:
Minasragra, Peru.
 Name Origin:
Named for Eulagio E. Fernanadini, former owner of the Minasragra deposit.
Physical Properties:
 Cleavage:
[???] Perfect
 Color:
dark green.
 Density:
2.78
 Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Foliated - Two dimensional platy forms.,
 Hardness:
2-3 - Gypsum-Calcite
 Luster:
Sub Metallic
 Streak:
dark green
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